Longmont, Colorado Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Longmont, CO Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
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A
Health Above average
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B
Income Around average
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B
Education Around average
Source: Map AI Methodology
Population
| Metric | Longmont | Colorado Avg | U.S. Average |
|---|---|---|---|
| Population | 81,268 | 5,842,429 | 337,468,954 |
| Population density (per sq mi) | 2597.2 | 56.1 | 86.4 |
| Population growth (%/yr) | 0.73% | 1.09% | 0.59% |
| Median age | 41.5 | 35.2 | 37.3 |
| Households | 34,353 | 2,364,171 | 130,235,071 |
Population in Longmont grew by 10.0% from 2009 to 2024, reaching 81,268 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Longmont is Millennials, aged 29–44, at 22.7% of residents. That is 1.5 points below Colorado as a whole.
- Gen Z 13–28 17,022 20.9% -1.6 pts
- Millennials 29–44 18,465 22.7% -1.5 pts
- Gen X 45–60 17,144 21.1% +1.3 pts
- Boomers 61–79 13,296 16.4% +1.1 pts
Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below Colorado, in percentage points. Children younger than Gen Z and the generations before the Boomers are counted in the population but not shown here, so these shares do not add up to 100%.
Male and female share
Women are 50.2% of the people living in Longmont and men 49.8%.
- Women 50.2% Colorado 49.4%
- Men 49.8% Colorado 50.6%
How many residents match a customer profile?
Residents matching this profile
100% of everyone living in Longmont
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Economy
Longmont has a the economy index of B, which means it is quite prosperous.
| Metric | Longmont | Colorado Avg | U.S. Average |
|---|---|---|---|
| Median household income | $89,595 | $95,803 | $80,455 |
| Income growth (%/yr) | 5.02% | 5.41% | 4.80% |
| Unemployment rate | 4.7% | 4.6% | 5.2% |
The median household income in Longmont is about 6% lower than in Colorado.
Housing
| Metric | Longmont | Colorado Avg | U.S. Average |
|---|---|---|---|
| Median home price | $78,418 | $484,034 | $248,835 |
| Median rent | $1,776 | $1,761 | $1,407 |
| Homeownership rate | 64.4% | 66.2% | 65.2% |
The median home price in Longmont is about 3.7 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $1,776 per month for that long.
Commute Time & Mobility
Commuters in Longmont spend about 43 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 179 hours, about 7.5 full days, spent commuting.
| Metric | Longmont | Colorado Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 21.5 | 22.0 | 22.4 |
| Round-trip commute (min) | 42.9 | 44.1 | 44.8 |
| Yearly time spent (hours) | 179 | 184 | 187 |
| Estimated yearly cost | $5,547 | $5,694 | $5,790 |
| Work from home | 21.6% | 21.0% | 15.0% |
| Highway traffic (vehicles/day) | 16,368 | 8,183 | 8,813 |
| Local road traffic (vehicles/day) | 2,840 | 1,277 | 1,355 |
The average commute time in Longmont is 21 minutes, shorter than the 22 minutes in Colorado.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
Longmont has a education index of B, which means it is quite educated.
| Metric | Longmont | Colorado Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 40.3% | 40.3% | 31.6% |
| Average household size | 2.34 | 2.42 | 2.53 |
Health
Longmont has a health index of A, which means it is very healthy.
| Metric | Longmont | Colorado Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 79.8 | 80.0 | 78.3 |
| Self-rated poor health | 11.0% | 13.2% | 16.3% |
| Smokers | 14.1% | 16.1% | 19.0% |
Longmont, CO Compared With Nearby Cities
How Longmont, CO compares with the 1 cities closest to it.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Longmont, CO | 81,268 | $89,595 #2/2 | $78,418 #2/2 | 21.5 min #1/2 |
| Erie, CO | 24,140 | $171,687 | $872,338 | 23.3 min |
Frequently Asked Questions
Common questions about Longmont, Colorado.
What is the population of Longmont, Colorado?
About 81,268 people live in Longmont, Colorado, in 34,353 households of 2.3 people on average. The median age is 41.5, so residents are older than the U.S. median of 37.3 by about 4 years.
Is Longmont, Colorado mostly urban or rural?
Averaged over its land area, Longmont, Colorado has 2,597 people per square mile, a density typical of urban and suburban areas. That is about 30 times the U.S. average of 86.
How affordable is housing in Longmont, Colorado?
The median home costs 0.9 times the median household income ($78,418 against $89,595), compared with 3.1 times nationally. That is within the traditional rule of thumb of about 3 times income. Median rent of $1,776 a month takes about 24% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
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